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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.6, 2007³â, pp.67-76
Porous Plate¸¦ ÀÌ¿ëÇÑ °³¼±µÈ ·¹ÀÌ´× ½Ã½ºÅÛ
( Improved Raining System Using Porous Plate )
ÃÖ¼º±Ù;À̹®ÁÖ;ÃßÇö¿í;È«¼ºÁø;ÀÌ¿ìÁø; °í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;°í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;°í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;°í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;°í·Á´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇаú;
 
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³«»ç¹ýÀº ¿ä±¸µÇ´Â »ó´ë¹Ðµµ·Î ¹Ýº¹ÀûÀ¸·Î ½Ã·á Á¶¼ºÀÌ °¡´ÉÇÏ°í ´Ù¾çÇÑ ¿µÇâ¿äÀο¡ ´ëÇÑ Æò°¡¸¦ ÅëÇØ Á¶¼ºµÇ´Â ½Ã·áÀÇ ½Å·Ú¼ºÀÌ È®º¸µÇ¾ú´Ù´Â ÀåÁ¡À» °¡Áö°í ÀÖ¾î è¹ö ½ÃÇèÀ» À§ÇÑ »çÁúÅä ½Ã·áÁ¶¼º ¹æ¹ýÀ¸·Î ³Î¸® ¾²À̰í ÀÖ´Ù. ±×·¯³ª °³ÆóÀ²À» Á¶ÀýÇÏ¿© »ó´ë¹Ðµµ¸¦ Á¶ÀýÇÏ´Â ±âÁ¸ÀÇ ¹æ¹ýÀ¸·Î Á¶¼ºµÈ ½Ã·á´Â »óÇϺΰ£ »ó´ë¹ÐµµÂ÷°¡ Á¸ÀçÇϰí, °³ÆóÀ² Á¦¾î¸¸À¸·Î ´Ù¾çÇÑ »ó´ë¹Ðµµ¸¦ ±¸ÇöÇÒ ¼ö ¾ø´Â ´ÜÁ¡ÀÌ ÀÖÀ¸¸ç, ÀÔÀÚ Æ¯¼º¿¡ µû¶ó ½Ã½ºÅÛÀ» ÀçÁ¶Á¤ÇÏ¿© »ó´ë¹Ðµµ Á¶°ÇÀ» ã¾Æ¾ß ÇÏ´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. º» ³í¹®¿¡¼­´Â °³ÆóÀ²º¸´Ù´Â ³«Çϰí Á¶Àý¿¡ ÀÇÇØ ´Ù¾çÇÑ »ó´ë¹ÐµµÀÇ ½Ã·á¸¦ Á¶¼ºÇÒ ¼ö ÀÖµµ·Ï porous plate¸¦ »ç¿ëÇÑ ·¹ÀÌ´× ½Ã½ºÅÛÀ» Á¦¾ÈÇÏ¿© ½ÃÇèÇÏ¿´´Ù. ±× °á°ú ±âÁ¸ÀÇ ¹®Á¦Á¡ÀÎ °³ÆóÀ²ÀÇ ¼¼ºÐÈ­¿Í ³«ÇϰŸ®ÀÇ ¿µÇâÀ» ÃÖ¼ÒÈ­ ÇÒ ¼ö ÀÖ¾úÀ¸¸ç ³·Àº »ó´ë¹Ðµµ Á¶¼º½Ã ¹®Á¦µÇ¾ú´ø ½Ã·á »óÇϺΰ£ ºñ±ÕÁú¼ºÀ» °³¼±ÇÏ¿´´Ù.
Raining method has been widely used for preparing sand specimen because of its ability to reconstitute the homogeneous specimen with desired relative density and its reliability established by the numerous experiments on diverse influential factors. In conventional raining methods, adjustment of relative density is achieved by controlling the shutter porosity and the whole system is required to be re-adjusted to achieve the target relative density when the granular characteristics are changed. It is also observed from conventional methods that certain degrees of spatial variation in density exist and the limited range of relative density is reproduced. In this paper, raining system with porous plate is proposed. It is shown that the wide range of relative density can be achieved by controlling failing height only. This enhanced system is able to obviate the subtle control of shutter porosity and minimize the effect of falling distance, which in turn ensures the homogeneity of the specimen, especially for low relative density.
 
Ű¿öµå
Falling height;Porous plate;Shutter porosity;Raining method;Relative density;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.6, 2007³â, pp.67-76
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200727500254831)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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